module GraphQL::Define::AssignArgument

def self.call(target, name, type = nil, description = nil, default_value: nil, &block)
  argument = if block_given?
    GraphQL::Argument.define(&block)
  else
    GraphQL::Argument.new
  end
  argument.name = name.to_s
  type && argument.type = type
  description && argument.description = description
  !default_value.nil? && argument.default_value = default_value
  target.arguments[name.to_s] = argument
end