const gopkg.in/yaml.v2.yaml_MERGE_TAG

3 uses

	gopkg.in/yaml.v2 (current package)
		decode.go#L814: 	return n.kind == scalarNode && n.value == "<<" && (n.implicit == true || n.tag == yaml_MERGE_TAG)
		resolve.go#L48: 		{"<<", yaml_MERGE_TAG, []string{"<<"}},
		yamlh.go#L321: 	yaml_MERGE_TAG  = "tag:yaml.org,2002:merge"