setInitialNodeLocationFullRegular(e) {
    const t = this.LA(1);
    e.location = {
      startOffset: t.startOffset,
      startLine: t.startLine,
      startColumn: t.startColumn,
      endOffset: NaN,
      endLine: NaN,
      endColumn: NaN
    };
  }
@see setInitialNodeLocationOnlyOffsetRegular for explanation why this work
@param cstNode