code: public InvalidRequestException withRequiredParameters(String... requiredParameters) {
          if (this.requiredParameters == null) {
              setRequiredParameters(new java.util.ArrayList<String>(requiredParameters.length));
          }
          for (String ele : requiredParameters) {
              this.requiredParameters.add(ele);
          }
          return this;
      }
docs: <p>
  The request omitted one or more required parameters.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setRequiredParameters(java.util.Collection)} or {@link #withRequiredParameters(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param requiredParameters
  The request omitted one or more required parameters.
  @return Returns a reference to this object so that method calls can be chained together.