Returns the line background data for the given line or null if
there is none.
@param lineOffset offset of the line start relative to the start
of the content.
@param line line to get line background data for
@return line background data for the given line.
Returns the line background data for the given line or null if there is none.
@param lineOffset offset of the line start relative to the start of the content. @param line line to get line background data for @return line background data for the given line.