Validation / intellisense using XSDs with same namespace

Hi,

I have two XSDs with same namespace:

document.a.1.0.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" version="1.0" xmlns="urn:xsd:document.a.1.0" targetNamespace="urn:xsd:document.a.1.0">
  <xs:element name="Document" type="DocumentType"></xs:element>
  <xs:complexType name="DocumentType">
    <xs:sequence>
      <xs:element name="A1" type="xs:string" fixed="1"></xs:element>
      <xs:element name="A2" type="A2Type"></xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name="A2Type">
    <xs:sequence>
      <xs:element name="A3" type="xs:string" fixed="3"></xs:element>
    </xs:sequence>
  </xs:complexType>
</xs:schema>

document.a.1.0.add.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" version="1.0" xmlns="urn:xsd:document.a.1.0" targetNamespace="urn:xsd:document.a.1.0">
  <xs:element name="Document" type="DocumentType"></xs:element>
  <xs:complexType name="DocumentType">
    <xs:sequence>
      <xs:element name="A1" type="xs:string" fixed="2"></xs:element>
      <xs:element name="A2" type="A2Type_2"></xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name="A2Type_2">
    <xs:sequence>
      <xs:element name="A3" type="xs:string" fixed="33"></xs:element>
    </xs:sequence>
  </xs:complexType>
</xs:schema>

And I generally use validation using catalog. For this XSD's I have the following entries in catalog.

catalog.xml

<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog" prefer="system">
  <system systemId="document.a.1.0.xsd" uri="document.a.1.0.xsd" />
  <system systemId="document.a.1.0.add.xsd" uri="document.a.1.0.add.xsd" />
  <uri name="urn:xsd:document.a.1.0" uri="document.a.1.0.xsd" />
  <uri name="urn:xsd:document.a.1.0" uri="document.a.1.0.add.xsd" />
</catalog>

The validation of the following XML passes in VsCode using this extension (I would say due to order of XSDs in catalog):

<?xml version="1.0" encoding="UTF-8"?>
<p:Document xmlns:p="urn:xsd:document.a.1.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <p:A1>1</p:A1>
  <p:A2>
    <p:A3>3</p:A3>
  </p:A2>
</p:Document>

But, this one fails:

<?xml version="1.0" encoding="UTF-8"?>
<p:Document xmlns:p="urn:xsd:document.a.1.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <p:A1>2</p:A1>
  <p:A2>
    <p:A3>33</p:A3>
  </p:A2>
</p:Document>

When I do validation in Java code I must choose the correct XSD to validate XML.
The issue may be related to XERCESJ-1130.

Is there a way to do the similar in VsCode, keeping the catalog as-is, but choose correct XSD?

Start with the catalog.xml entries and the two schemas, document.a.1.0.xsd and document.a.1.0.add.xsd, then reproduce validation and IntelliSense behavior in VS Code using the two sample XML documents. Determine how a schema is selected when both URI mappings use the same namespace; done means users can choose the intended XSD without changing the catalog.