processContent not being called

[monte-hayward]

At first I thought my processContent function was running, and not creating the desired effect. I see from output that grunt-copy-to sees processContent as undefined.

    copyto: {
      exampleImages: { 
        files: [
          {
            cwd: '.src/assets/examples/', 
            src: ['**/*.png'], 
            dest: 'assets/examples/',
            expand: true
          }
        ],
        options: {
          processContent: function(content, path) {
            fs.chmod( content, 700, function(err){
              if(err) throw err;
            });
            console.log('processing ' + content);
            return content; // do something with content or return false to abort copy
          },
          ignore: [
            '**/*.md'
          ]
        }
      }
    },

$grunt --verbose copyto
Running "copyto:exampleImages" (copyto) task
Verifying property copyto.exampleImages exists in config...OK
Files: .src/assets/examples/innovative/profile-editor.png -> assets/examples/innovative/profile-editor.png
...
Options: ignore=["**/*.md"], processContent=undefined
Unchanged .src/assets/examples/innovative/profile-editor.png
...
Copied 0 files (40 unchanged), created 0 folders, ignored 0 resources