code: private ImmutableList<ASTParameter> getParameters(List<? extends VariableElement> variableElements) {
          ImmutableList.Builder<ASTParameter> astParameterBuilder = ImmutableList.builder();
  
          for (VariableElement variables : variableElements) {
              astParameterBuilder.add(getParameter(variables));
          }
  
          return astParameterBuilder.build();
      }
docs: Build a list of ASTParameters corresponding tot he input VariableElement list elements
  
  @param variableElements required input element
  @return list of ASTParameters