class SimpleCov::SourceFile

def lines

and thus including coverage data. Aliased as :source_lines
Returns all source lines for this file as instances of SimpleCov::SourceFile::Line, 
def lines
  return @lines unless @lines.nil?
  # Initialize lines
  @lines = []
  coverage.each_with_index do |coverage, i|
    @lines << SimpleCov::SourceFile::Line.new(src[i], i+1, coverage)
  end
  @lines
end