code: public Stage withStageVariables(java.util.Map<String, String> stageVariables) {
          setStageVariables(stageVariables);
          return this;
      }
docs: <p>
  A map that defines the stage variables for a stage resource. Variable names can have alphanumeric and underscore
  characters, and the values must match [A-Za-z0-9-._~:/?#&=,]+.
  </p>
  
  @param stageVariables
  A map that defines the stage variables for a stage resource. Variable names can have alphanumeric and
  underscore characters, and the values must match [A-Za-z0-9-._~:/?#&=,]+.
  @return Returns a reference to this object so that method calls can be chained together.