code: function toStageSuffixedStreamName(unsuffixedStreamName, stage, context) {
    return _toStageSuffixedName(unsuffixedStreamName, stage, settingNames.streamNameStageSeparator, context);
  }
docs: ===================================================================================================================== Stream name qualification (default) ===================================================================================================================== 
  Returns a stage-suffixed version of the given unsuffixed stream name with an appended stage suffix, which will
  contain the configured streamNameToStageSeparator followed by the given stage, which will be appended in uppercase,
  lowercase or kept as is according to the configured injectInCase.
  
  @param {string} unsuffixedStreamName - the unsuffixed name of the stream
  @param {string} stage - the stage to append
  @param {StageHandling|Object} context - the context to use with stage handling settings and logging functionality
  @returns {string} the stage-suffixed stream name