http://github.com/FasterXML/jackson-dataformats-binary: Support for reading and writing protobuf-encoded data via Jackson abstractions. (FasterXML)
  • Tatu Saloranta
  • Christopher Currie
  • Paul Brown 
package com.fasterxml.jackson.dataformat.protobuf.schemagen;

import com.fasterxml.jackson.databind.BeanProperty;

interface TagGenerator {
	int nextTag(BeanProperty writer);
}