module Roda::RodaPlugins

def self.deprecate_constant(mod, name)

if the ruby version supports it.
Deprecate the constant with the given name in the given module, 
def self.deprecate_constant(mod, name)
  # :nocov:
  if RUBY_VERSION >= '2.3'
    mod.deprecate_constant(name)
  end
  # :nocov:
end