Issue in JSON parsing when array size is zero

2017-02-27 06:47:03,005 | ERROR | l for user karaf | ShellUtil | 27 - org.apache.karaf.shell.console - 3.0.5 | Exception caught while executing command
java.lang.IllegalArgumentException: Requested allocation_pools is not child in neutronSubnets
at org.onosproject.yms.app.ydt.YangRequestWorkBench.addChild(YangRequestWorkBench.java:414)
at org.onosproject.yms.app.ydt.YangRequestWorkBench.addChild(YangRequestWorkBench.java:294)
at org.onosproject.yms.app.ydt.YangRequestWorkBench.addChild(YangRequestWorkBench.java:269)
at org.onosproject.protocol.restconf.server.utils.parser.json.JsonToYdtListener.enterJsonNode(JsonToYdtListener.java:78)
at org.onosproject.protocol.restconf.server.utils.parser.json.DefaultJsonWalker.walk(DefaultJsonWalker.java:38)
at org.onosproject.protocol.restconf.server.utils.parser.json.DefaultJsonWalker.walkJsonNode(DefaultJsonWalker.java:76)
at org.onosproject.protocol.restconf.server.utils.parser.json.DefaultJsonWalker.walkArrayNode(DefaultJsonWalker.java:104)
at org.onosproject.protocol.restconf.server.utils.parser.json.DefaultJsonWalker.walkJsonNode(DefaultJsonWalker.java:81)
at org.onosproject.protocol.restconf.server.utils.parser.json.DefaultJsonWalker.walk(DefaultJsonWalker.java:56)
at org.onosproject.protocol.restconf.server.utils.parser.json.ParserUtils.convertJsonToYdt(ParserUtils.java:91)
at org.onosproject.protocol.restconf.ctl.JsonYdtCodec.decodeCompositeProtocolDataToYdt(JsonYdtCodec.java:115)
at org.onosproject.yms.app.ych.DefaultYangCodecHandler.decode(DefaultYangCodecHandler.java:222)
at org.onosproject.ssfcym.manager.SsfcNeutornSubnetYangManager.getSubnets(SsfcNeutornSubnetYangManager.java:184)