class ISO3166::Data

def synchronized(&block)

Experimental RBS support (using type sampling data from the type_fusion project). 

def synchronized: () -> (Array[String] | Hash | bool)

This signature was generated using 50 samples from 2 applications. 

def synchronized(&block)
  if use_mutex?
    @mutex.synchronize(&block)
  else
    block.call
  end
end