ArcGIS Server SOI - HandleRESTRequest Parameter limitations

The SOI Rest request handler method -

public byte[] HandleRESTRequest(string Capabilities, string resourceName, string operationName,
            string operationInput, string outputFormat, string requestProperties, out string responseProperties)

 HandleRESTRequest paramater provides following information inside the method

capabilities Map,Query,Data
 resourceName layers/0, 
operationName query, 
operationInput {"returnZ":false,"returnIdsOnly":false,
"where":"","returnDistinctValues":false,"returnM":false,"returnCountOnly":false,"returnExtentsOnly":false,
"returnTrueCurves":false,"returnGeometry":true,
"spatialRel":"esriSpatialRelIntersects","geometryType":"esriGeometryEnvelope"}, outputFormat json, 
requestProperties {"computeETag":true,"ETag":"\"c429a59c\""}, 
responseProperties {"Content-Type":"text/plain"}
But it has no way of telling service name and layer name ...other than using layer index from resourceName if you want to perform layer specific operation in layers.

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