Plyex javax.validations size

[notnigel]

There is a snakeyaml error being thrown on minlength and maxlength when

1. Using @Size on the model property.
2. Using @ParameterObject and @Valid on the request controller method argument

Model:

public class User {
   @Size(min=0, max=20)
   private String name;

   public User(String name) {
      this.name = name;
}

Controller

@RestController
@RequestMapping("api/v1/users")
public class UserController {
    @GetMapping(
            value = "/iwhoami",
            produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<?> whoami(
            @ParameterObject
            @Valid
            User user) {
                 return new ResponseEntity<>(new User(), HttpStatus.OK);
   }
}

Partial Exception Stack Trace:

Caused by: Cannot create property=get for JavaBean=org.plyct.plyex.openapi.OpenApi$Path@132e0cc
 in 'string', line 646, column 5:
        get:
        ^
Cannot create property=parameters for JavaBean=org.plyct.plyex.openapi.OpenApi$Operation@2c78d320
 in 'string', line 647, column 7:
          tags:
          ^
Cannot create property=schema for JavaBean=org.plyct.plyex.openapi.OpenApi$Parameter@67d18ed7
 in 'string', line 651, column 9:
          - name: accountNumber
            ^
Cannot create property=maxLength for JavaBean=org.plyct.plyex.openapi.OpenApi$Schema@5c44c582
 in 'string', line 655, column 11:
              maxLength: 1
              ^
Unable to find property 'maxLength' on class: org.plyct.plyex.openapi.OpenApi$Schema
 in 'string', line 655, column 22:
              maxLength: 1
                         ^

 in 'string', line 655, column 11:
              maxLength: 1
              ^

 in 'string', line 651, column 7:
          - name: accountNumber
          ^

 in 'string', line 647, column 7:
          tags:
          ^

        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:291)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct(Constructor.java:172)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:230)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:220)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping2ndStep(BaseConstructor.java:480)
        at org.yaml.snakeyaml.constructor.SafeConstructor.constructMapping2ndStep(SafeConstructor.java:190)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructMapping(BaseConstructor.java:461)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct(Constructor.java:159)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:230)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:220)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.newInstance(Constructor.java:306)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:268)
        ... 11 more
Caused by: Cannot create property=parameters for JavaBean=org.plyct.plyex.openapi.OpenApi$Operation@2c78d320
 in 'string', line 647, column 7:
          tags:
          ^
Cannot create property=schema for JavaBean=org.plyct.plyex.openapi.OpenApi$Parameter@67d18ed7
 in 'string', line 651, column 9:
          - name: accountNumber
            ^
Cannot create property=maxLength for JavaBean=org.plyct.plyex.openapi.OpenApi$Schema@5c44c582
 in 'string', line 655, column 11:
              maxLength: 1
              ^
Unable to find property 'maxLength' on class: org.plyct.plyex.openapi.OpenApi$Schema
 in 'string', line 655, column 22:
              maxLength: 1
                         ^

 in 'string', line 655, column 11:
              maxLength: 1
              ^

 in 'string', line 651, column 7:
          - name: accountNumber
          ^

        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:291)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct(Constructor.java:172)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:230)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:220)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:268)
        ... 22 more
Caused by: Cannot create property=schema for JavaBean=org.plyct.plyex.openapi.OpenApi$Parameter@67d18ed7
 in 'string', line 651, column 9:
          - name: accountNumber
            ^
Cannot create property=maxLength for JavaBean=org.plyct.plyex.openapi.OpenApi$Schema@5c44c582
 in 'string', line 655, column 11:
              maxLength: 1
              ^
Unable to find property 'maxLength' on class: org.plyct.plyex.openapi.OpenApi$Schema
 in 'string', line 655, column 22:
              maxLength: 1
                         ^

 in 'string', line 655, column 11:
              maxLength: 1
              ^

        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:291)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct(Constructor.java:172)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:230)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:220)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructArrayStep2(BaseConstructor.java:405)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructArray(BaseConstructor.java:386)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructSequence.construct(Constructor.java:549)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:230)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:220)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.newInstance(Constructor.java:306)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:268)
        ... 26 more
Caused by: Cannot create property=maxLength for JavaBean=org.plyct.plyex.openapi.OpenApi$Schema@5c44c582
 in 'string', line 655, column 11:
              maxLength: 1
              ^
Unable to find property 'maxLength' on class: org.plyct.plyex.openapi.OpenApi$Schema
 in 'string', line 655, column 22:
              maxLength: 1
                         ^

        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:291)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.construct(Constructor.java:172)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:230)
        at org.yaml.snakeyaml.constructor.BaseConstructor.constructObject(BaseConstructor.java:220)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:268)
        ... 36 more
Caused by: org.yaml.snakeyaml.error.YAMLException: Unable to find property 'maxLength' on class: org.plyct.plyex.openapi.OpenApi$Schema
        at org.yaml.snakeyaml.introspector.PropertyUtils.getProperty(PropertyUtils.java:158)
        at org.yaml.snakeyaml.introspector.PropertyUtils.getProperty(PropertyUtils.java:148)
        at org.yaml.snakeyaml.TypeDescription.discoverProperty(TypeDescription.java:254)
        at org.yaml.snakeyaml.TypeDescription.getProperty(TypeDescription.java:265)
        at org.plyct.plyex.openapi.YamlDoc$TypeDescription.getProperty(YamlDoc.java:158)
        at org.yaml.snakeyaml.constructor.Constructor$ConstructMapping.constructJavaBean2ndStep(Constructor.java:231)
        ... 40 more