Prism::CaseMatchNode#case_keyword_loc

# File tmp/rubies/ruby-4.0.0/lib/prism/node.rb, line 3641
def case_keyword_loc
  location = @case_keyword_loc
  return location if location.is_a?(Location)
  @case_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end