Prism::DefNode#def_keyword_loc

# File tmp/rubies/ruby-3.4.1/lib/prism/node.rb, line 5973
def def_keyword_loc
  location = @def_keyword_loc
  return location if location.is_a?(Location)
  @def_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end