def value?(value)
      value = Erlang.from(value)
      each { |k,v| return true if value == v }
      return false
    end
def value?(value)
      value = Erlang.from(value)
      each { |k,v| return true if value == v }
      return false
    end
Return `true` if this `Map` has one or more keys which map to the provided value.

 @example
   Erlang::Map["A" => 1, "B" => 2, "C" => 3].value?(2)  # => true

 @param value [Object] The value to check for
 @return [Boolean]