class RuboCop::Cop::Style::EmptyLinesAroundBlockBody


end
…
something do
@example
the configuration.
This cops checks if empty lines around the bodies of blocks match

def check(node) 

def check(node)
  start_line = node.loc.begin.line
  end_line = node.loc.end.line
  return if start_line == end_line
  check_source(start_line, end_line)
end

def on_block(node) 

def on_block(node)
  check(node)
end