@Test
public void getApplyMethodDeclaration() {

    String methodName = "METHOD_NAME";
    MethodDeclaration retrieved = DefineFunctionUtils.getApplyMethodDeclaration(methodName, applySupplier.get(), OBJECT_CLASS, DEFAULT_PARAMETERTYPE_MAP);
    String expected = String.format("java.lang.Object %s(java.util.List<org.kie.pmml.commons.model.tuples.KiePMMLNameValue> param1) {\n" +
                                            "    java.lang.Object variableapplyVariableConstant1 = 34.6;\n" +
                                            "    java.util.Optional<org.kie.pmml.commons.model.tuples.KiePMMLNameValue> kiePMMLNameValue = param1.stream().filter((org.kie.pmml.commons.model.tuples.KiePMMLNameValue lmbdParam) -> java.util.Objects.equals(\"FIELD_REF\", lmbdParam.getName())).findFirst();\n" +
                                            "    java.lang.Object variableapplyVariableFieldRef2 = (java.lang.Object) kiePMMLNameValue.map(org.kie.pmml.commons.model.tuples.KiePMMLNameValue::getValue).orElse(null);\n" +
                                            "    java.lang.Object applyVariable = this.FUNCTION_NAME(param1, variableapplyVariableConstant1, variableapplyVariableFieldRef2);\n" +
                                            "    return applyVariable;\n" +
                                            "}", methodName);
    assertEquals(expected, retrieved.toString());
}