function getTokenRangeByColumn(column)
        {
            var token = textEditor.tokenAtTextPosition(textSelection.startLine, column);
            if (!token)
                return null;
            return new WebInspector.TextRange(textSelection.startLine, token.startColumn, textSelection.startLine, token.endColumn);
        }
@param {number} column
@return {?WebInspector.TextRange}