Is there an easy way to get the location of a descriptor(message、field, etc.)？

[ououmania]

Please forgive me if the answer seems obvious. But I do need help to find an easy way to ge the source location of the protobuf
descriptors. I did read the part in the document but it's really not easy to parse these mysterious numbers to find the location.
Is there already some helper method to bind the path to a descriptor?

Each element is a field number or an index. They form a path from the root FileDescriptorProto to the 
place where the definition. 
For example, this path: [ 4, 3, 2, 7, 1 ] refers to: file.message_type(3) // 4, 3 .field(7) // 2, 7 .name() // 1 
This is because FileDescriptorProto.message_type has field number 4: repeated DescriptorProto message_type = 4; 
and DescriptorProto.field has field number 2: repeated FieldDescriptorProto field = 2; and 
FieldDescriptorProto.name has field number 1: optional string name = 1;