docs: protected FieldMetadata processSimpleType( FieldDeclaration fieldDeclaration ) {
          SimpleType simpleType = (SimpleType)fieldDeclaration.getType();
          FieldMetadata simpleTypeFieldMetadata = FieldMetadata.simpleType(JavaMetadataUtil.getName(simpleType.getName()));
          // modifiers
          processModifiersOfFieldDeclaration(fieldDeclaration, simpleTypeFieldMetadata);
          processVariablesOfVariableDeclarationFragment(fieldDeclaration, simpleTypeFieldMetadata);
          simpleTypeFieldMetadata.setName(getFieldName(fieldDeclaration));
  
          return simpleTypeFieldMetadata;
      }