A.class:
  PsiJetFileStubImpl[package=]
    PACKAGE_DIRECTIVE
    IMPORT_LIST
    CLASS[classId=/A, fqName=A, isClsStubCompiledToJvmDefaultImplementation=false, isEnumEntry=false, isInterface=true, isLocal=false, isTopLevel=true, name=A, superNames=[]]
      MODIFIER_LIST[public]
      CLASS_BODY


ReceiversKt.class:
  PsiJetFileStubImpl[package=]
    PACKAGE_DIRECTIVE
    IMPORT_LIST
    FUN[fqName=foo, hasBody=true, hasNoExpressionBody=true, hasTypeParameterListBeforeFunctionName=false, isExtension=true, isTopLevel=true, mayHaveContract=false, name=foo]
      MODIFIER_LIST[public]
      TYPE_REFERENCE
        USER_TYPE
          REFERENCE_EXPRESSION[referencedName=A]
      VALUE_PARAMETER_LIST
      TYPE_REFERENCE
        USER_TYPE
          USER_TYPE
            REFERENCE_EXPRESSION[referencedName=kotlin]
          REFERENCE_EXPRESSION[referencedName=Unit]
    FUN[fqName=myRequireNotNull, hasBody=true, hasNoExpressionBody=true, hasTypeParameterListBeforeFunctionName=false, isExtension=true, isTopLevel=true, mayHaveContract=true, name=myRequireNotNull]
      MODIFIER_LIST[public]
      TYPE_REFERENCE
        NULLABLE_TYPE
          USER_TYPE
            USER_TYPE
              REFERENCE_EXPRESSION[referencedName=kotlin]
            REFERENCE_EXPRESSION[referencedName=Any]
      VALUE_PARAMETER_LIST
      TYPE_REFERENCE
        USER_TYPE
          USER_TYPE
            REFERENCE_EXPRESSION[referencedName=kotlin]
          REFERENCE_EXPRESSION[referencedName=Unit]
