module ElasticAPM::Deprecations

def deprecate(name, replacement = nil)
  alias_name = "#{name.to_s.chomp('=')}__deprecated_"
  alias_name += '=' if name.to_s.end_with?('=')
  class_eval <<-RUBY, __FILE__, __LINE__ + 1
    alias :"#{alias_name}" :"#{name}"
    def #{name}(*args, &block)
      warn "[ElasticAPM] [DEPRECATED] `#{name}' is being removed. " \
           "#{replacement && "See `#{replacement}'."}" \
           "\nCalled from \#{caller.first}"
      send("#{alias_name}", *args, &block)
    end
  RUBY
end