code: public void setUserDefinedFunctions(java.util.Collection<UserDefinedFunction> userDefinedFunctions) {
          if (userDefinedFunctions == null) {
              this.userDefinedFunctions = null;
              return;
          }
  
          this.userDefinedFunctions = new java.util.ArrayList<UserDefinedFunction>(userDefinedFunctions);
      }
docs: <p>
  A list of requested function definitions.
  </p>
  
  @param userDefinedFunctions
  A list of requested function definitions.