Error with @Schema annotation on enum on 2.5.6 but not on 2.5.5

[noeliajimenezg]

The annotation io.swagger.v3.oas.annotations.media.Schema used on an enum class is throwing the error "Enum types cannot be defined as beans" since Micronaut 2.5.6.

Steps to Reproduce

1. Having an enum class

@Schema(description = "My description")
public enum MyEnumClass {
  VALUE1,
  VALUE2;
}

2. Having a class using the enum

public class MyClass {
  MyEnumClass logisticType;
}

Expected Behaviour

Build successful.

Actual Behaviour

The error "Enum types cannot be defined as beans" is thrown.
That error handling was added longtime ago on this commit: 88e5f1f#diff-eb053b86bf8cb1bf2922f4e33f58ffdd98065386b02f884b32b70afa5b4ace42

Environment Information

• Operating System: Mac OS Big Sur
• Micronaut Version: 2.5.6
• JDK Version: JDK 16

Workaround solution

@ApiModel(description = "My description")
public enum MyEnumClass {
  VALUE1,
  VALUE2;
}

public class MyClass {
  @ApiModelProperty MyEnumClass logisticType;
}