fix: correct XPath descendant axis in catalog assessment-method constraints

Author: nancysangani

src/metaschema/oscal_catalog_metaschema.xml

@@ -340,7 +340,7 @@
                         </remarks>
                   </allowed-values>
                   <allowed-values id="oscal-control-objective-part-subpart-name"
-                        target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name">
+                        target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]//part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name">
                         <enum value="objects" deprecated="1.0.1">**(deprecated)** Use
                               'assessment-objects' instead.</enum>
                         <enum value="assessment-objects">Provides a listing of assessment
@@ -350,17 +350,17 @@
                         </remarks>
                   </allowed-values>
                   <allowed-values id="oscal-control-statement-part-prop-name"
-                        target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name">
+                        target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]//prop[has-oscal-namespace('http://csrc.nist.gov/ns/oscal')]/@name">
                         <enum value="method" deprecated="1.0.1">**(deprecated)** Use 'method' in the 'http://csrc.nist.gov/ns/rmf' namespace. The assessment method to use. This typically appears on parts with the name "assessment-method".</enum>
                   </allowed-values>
                   <allowed-values id="oscal-control-statement-part-rmf-prop-name"
-                        target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name">
+                        target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]//prop[has-oscal-namespace('http://csrc.nist.gov/ns/rmf')]/@name">
                         <enum value="method">The assessment method to use. This typically appears on
                               parts with the name "assessment-method".</enum>
                   </allowed-values>
                   <expect level="WARNING" id="oscal-method-part-has-method-prop" target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]" test="prop[has-oscal-namespace(('http://csrc.nist.gov/ns/oscal','http://csrc.nist.gov/ns/rmf')) and @name='method']"/>
                   <allowed-values id="oscal-control-objective-part-method-prop-value"
-                        target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]/prop[has-oscal-namespace(('http://csrc.nist.gov/ns/oscal','http://csrc.nist.gov/ns/rmf')) and @name='method']/@value">
+                        target="part[has-oscal-namespace('http://csrc.nist.gov/ns/oscal') and @name=('assessment','assessment-method')]//prop[has-oscal-namespace(('http://csrc.nist.gov/ns/oscal','http://csrc.nist.gov/ns/rmf')) and @name='method']/@value">
                         <enum value="INTERVIEW">The process of holding discussions with individuals or groups of individuals within an organization to once again, facilitate assessor understanding, achieve clarification, or obtain evidence.</enum>
                         <enum value="EXAMINE">The process of reviewing, inspecting, observing, studying, or analyzing one or more assessment objects (i.e., specifications, mechanisms, or activities).</enum>
                         <enum value="TEST">The process of exercising one or more assessment objects (i.e., activities or mechanisms) under specified conditions to compare actual with expected behavior.</enum>