Requests the capability profile for the service.
serviceType : a URI reference to request the profile for a
particular service type;
version : the version of the request syntax;
timeStamp : a dateTime stamp (ISO 8601 format) that requests the
profile in effect at the specified instant.
xpath : an XPath 1.0 expression that specifies a set of nodes in
the capability profile;
view : a named view that specifies a subset of the profile.
id : a list of anyURI values that selects specific
elements of the capability profile by their unique
identifier.