Invoke a function defined in a required BKM

[saig0]

I can invoke a function that is defined in a required BKM. The function can be defined

• as a function definition (as decision logic)
• as a literal in a literal expression
• inside a context

requires camunda/feel-scala/issues/335

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Edit: currently, it is possible to invoke the function if it is defined in a required decision but not a BKM.

[saig0]

Invoke function from

• required decision with function literal or function definition: decisionName(x)
• required decision with context: decisionName.fun(x)
• required BKM with function literal or function definition : bkmName()(x)
• required BKM with context: bkmName().fun(x)

Related TCK tests:

• 0030-user-defined-functions
• 0031-user-defined-functions
• 0092-feel-lambda