code: public GetUserDefinedFunctionsResult withUserDefinedFunctions(UserDefinedFunction... userDefinedFunctions) {
          if (this.userDefinedFunctions == null) {
              setUserDefinedFunctions(new java.util.ArrayList<UserDefinedFunction>(userDefinedFunctions.length));
          }
          for (UserDefinedFunction ele : userDefinedFunctions) {
              this.userDefinedFunctions.add(ele);
          }
          return this;
      }
docs: <p>
  A list of requested function definitions.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setUserDefinedFunctions(java.util.Collection)} or {@link #withUserDefinedFunctions(java.util.Collection)}
  if you want to override the existing values.
  </p>
  
  @param userDefinedFunctions
  A list of requested function definitions.
  @return Returns a reference to this object so that method calls can be chained together.