class RuboCop::Cop::Style::ColonMethodDefinition


end
end
def self.bar
class Foo
# good
end
end
def self::bar
class Foo
# bad
@example
operator instead of the ‘.` operator.
Checks for class methods that are defined using the `::`

def on_defs(node) 

def on_defs(node)
  return unless node.loc.operator.source == '::'
  add_offense(node.loc.operator) do |corrector|
    corrector.replace(node.loc.operator, '.')
  end
end