_getOrigin () {
    const latestPrepareStackTrace = Error.prepareStackTrace
    Error.prepareStackTrace = arrayPrepareStackTrace
    const stack = (new Error()).stack
    Error.prepareStackTrace = latestPrepareStackTrace
    return this._processStack(stack, __filename)
  }
/**
   * Finds the origin of the Bristol log call, and supplies the file path and
   * line number.
   * This function uses JavaScriptStackTraceApi to be as fast as possible:
   * https://code.google.com/p/v8-wiki/wiki/JavaScriptStackTraceApi
   * @returns {null|{file, line}} An object containing the file path and line
   *   number of the originating Bristol call, or null if this information
   *   cannot be found.
   * @private
   */
Finds the origin of the Bristol log call, and supplies the file path and
line number.
Finds the origin of the Bristol log call and supplies the file path and line number .
_getOrigin () {
    const latestPrepareStackTrace = Error.prepareStackTrace
    Error.prepareStackTrace = arrayPrepareStackTrace
    const stack = (new Error()).stack
    Error.prepareStackTrace = latestPrepareStackTrace
    return this._processStack(stack, __filename)
  }
_getOrigin ( ) { const latestPrepareStackTrace = Error . prepareStackTrace Error . prepareStackTrace = arrayPrepareStackTrace const stack = ( new Error ( ) ) . stack Error . prepareStackTrace = latestPrepareStackTrace return this . _processStack ( stack , __filename ) }
Finds the origin of the Bristol log call, and supplies the file path and
 line number.
Finds the origin of the Bristol log call and supplies the file path and line number .