class RuboCop::Cop::Layout::LeadingEmptyLines

# a comment
# (start of file)
# good
end
class Foo
# (start of file)
# good
# a comment
# (start of file)
# bad
end
class Foo
# (start of file)
# bad
@example
of a file.
Checks for unnecessary leading blank lines at the beginning

def on_new_investigation 

def on_new_investigation
  token = processed_source.tokens[0]
  return unless token && token.line > 1
  add_offense(token.pos) do |corrector|
    range = Parser::Source::Range.new(processed_source.buffer, 0, token.begin_pos)
    corrector.remove(range)
  end
end