resourceExists 
Check to see if a resource exists. 
Note: This web services operation is different from the procedure of the same name, which is in the resource tree under /lib/resource.
Location
/services/webservices/system/admin/resource/operations/
Request Elements 
path: The path of the resource to check. 
type: The type of the resource to check. Valid values are CONTAINER, DATA_SOURCE, DEFINITION_SET, LINK, PROCEDURE, TABLE, TREE, and TRIGGER. 
version (optional): Reserved for future use. 
Response Elements 
exists: TRUE if the resource exists; otherwise FALSE. 
Faults 
IllegalArgument: If the path is malformed, an illegal type is provided, or any value is provided for version. 
Security: If the user does not have READ access on all items in path other than the last one. 
Security: If the user does not have the ACCESS_TOOLS right.