https://github.com/FasterXML/jackson-core: Core Jackson processing abstractions (aka Streaming API), implementation for JSON (FasterXML)
  • Tatu Saloranta 
Internal implementation classes for efficient handling of
of symbols in JSON (field names in Objects)

/**
 * Internal implementation classes for efficient handling of
 * of symbols in JSON (field names in Objects)
 */
package com.fasterxml.jackson.core.sym;