// Sensei Request Reference
	{
	  "query" : {
	    "query_string" : { 
	      "query" : "this AND that OR thus"
	    }
	  },
	
	  // paging parameters
	
	  "size" : 10,   // default to 10;
	  "from" : 0,    //default to 0;   
	  
	  // group by parameters (currently only support group by one column)
	  "groupBy" : {
	    "columns" : ["category"],
	    "top" : 3
	  },
	
	  // filters
	  "filter" : {
	    "terms" : {
	      "tags" : {
	        "values" : [ "blue", "pill" ],
	        "excludes" : ["red"],
	        "minimum_match" : 1,
	        "operator" : "or",
	        "_noOptimize" : false
	      }
	    }
	  },
	  
	  "selections" : [
	    {
	      //details of this part see the selections.json
	      "tags" : {
	        "values" : [ "blue", "pill" ],
	        "excludes" : ["red"],
	        "operator" : "or"
	      }
	    },
	    {
	      "term":{
	      },
	    },
	  ],
	
	  // facet parameters
	  "facets":{
	    "category":{
	      // maximum number of facet values to return
	      "max" : 10,
	      // minimum hit count for a given facet value
	      "minCount": 1,
	      // expand sibling facet values
	      "expand" : false,
	      // facet ordering, possible values: "hits", "val", defaults to "hits"
	      "order" : "hits"
	    }
	  },
	  
	      // facet initialization parameters for runtime facets
	  "facetInit":{
	    "network" : {
	      // parameter
	      "srcId" :{
	        // parameter type, valid values are: "int","string","boolean","long","bytes","double", default: "string"
	        "type" : "int",
	        // parameter values
	        "values" : [26609850]  //e.g. "$member"
	      },
	      "timeOut":{
	        "type" : "double",
	        "values" : [2.4]
	      },
	      "coldStart":{
	        "type" : "boolean",
	        "values" : [true]
	      },
	      "names":{
	        "type": "string",
	        "values":["a", "b", "c"]
	      },
	      "longId":{
	        "type": "long",
	        "values":[1234567890, 9876543210]
	      },
	      "binary":{
	        "type": "bytes",
	        "values":["SGVsbG8gd29ybGQ="]
	      }
	    }
	  },
	  
	  // sort parameters
	  "sort":[
	      {"color":"desc"},       // sort by color in reverse order
	      "_score"                     // secondary sort by relevance, reverse  parameter is ignored
	  ],
	
	
	
	  // fetch stored fields
	  "fetchStored" : false,
	
	  // fetch term vectors: array of field names
	  "termVectors" : [],
	
	  // partitions to send request to, empty list or null implies all partitions
	  "partitions":[1,2],
	
	  // send back scoring explanation for each hit
	  "explain" : false,
	
	  // routing parameter, if set, request will be consistent hashed to the same replica for each partition
	  "routeParam": null,
	
	  //Allows template substitution on the server. The template occurrence in other places should begin with the dollar sign. Even for the int values the template needs to be in quotes
	  "templateMapping":{
	    "size" : 10
	  }
	  //"size" : "$size"
	}