[x3d-public] Issue with data file XmpMetadataEmbedded.json...does not parse.

[John Carlson]

running in x3dschema github repository, bash validate.sh

Will check in when the shell script finishes, and before to update hand 
generated schema (adding "N" to geoSyste).

John

json-parse json Expected a ':' after a key at 6302 [character 24 line 
181] 
/c/x3d-code/www_web3d_org/x3d/content/examples/X3dForWebAuthors/Chapter15Metadata/XmpMetadataEmbedded.json
$ jsonlint 
/c/x3d-code/www_web3d_org/x3d/content/examples/X3dForWebAuthors/Chapter15Metadata/XmpMetadataEmbedded.json
Error: Parse error on line 165:
... },                { "MetadataSet":
----------------------^
Expecting 'STRING', got '{'
     at Object.parseError 
(/usr/local/lib/node_modules/jsonlint/lib/jsonlint.js:55:11)
     at Object.parse 
(/usr/local/lib/node_modules/jsonlint/lib/jsonlint.js:132:22)
     at parse (/usr/local/lib/node_modules/jsonlint/lib/cli.js:82:14)
     at main (/usr/local/lib/node_modules/jsonlint/lib/cli.js:135:14)
     at Object.<anonymous> 
(/usr/local/lib/node_modules/jsonlint/lib/cli.js:179:1)
     at Module._compile (internal/modules/cjs/loader.js:1138:30)
     at Object.Module._extensions..js 
(internal/modules/cjs/loader.js:1158:10)
     at Module.load (internal/modules/cjs/loader.js:986:32)
     at Function.Module._load (internal/modules/cjs/loader.js:879:14)
     at Function.executeUserEntryPoint [as runMain] 
(internal/modules/run_main.js:71:12)

My guess it that it's a containerField issue in X3DJSAIL, similar to 
backTexture (ComposedCubeMapTexture.java