instance method arity_coerce

# File activesupport/lib/active_support/deprecation/behaviors.rb, line 124
        def arity_coerce(behavior)
          unless behavior.respond_to?(:call)
            raise ArgumentError, "#{behavior.inspect} is not a valid deprecation behavior."
          end

          case arity_of_callable(behavior)
          when 2
            ->(message, callstack, deprecator) do
              behavior.call(message, callstack)
            end
          when -2..3
            behavior
          else
            ->(message, callstack, deprecator) do
              behavior.call(message, callstack, deprecator.deprecation_horizon, deprecator.gem_name)
            end
          end
        end