remove_at method

def remove_at(self, index: int):
    ...

doc = aw.Document()
xml_part_id = str(uuid.uuid4())
xml_part_content = '<root><text>Hello, World!</text></root>'
xml_part = doc.custom_xml_parts.add(xml_part_id, xml_part_content)
# Add an XML schema association.
xml_part.schemas.add('http://www.w3.org/2001/XMLSchema')
# Clone the custom XML part's XML schema association collection,
# and then add a couple of new schemas to the clone.
schemas = xml_part.schemas.clone()
schemas.add('http://www.w3.org/2001/XMLSchema-instance')
schemas.add('http://schemas.microsoft.com/office/2006/metadata/contentType')
self.assertEqual(3, schemas.count)
self.assertEqual(2, schemas.index_of('http://schemas.microsoft.com/office/2006/metadata/contentType'))
# Enumerate the schemas and print each element.
for schema in schemas:
    print(schema)
# Below are three ways of removing schemas from the collection.
# 1 -  Remove a schema by index:
schemas.remove_at(2)
# 2 -  Remove a schema by value:
schemas.remove('http://www.w3.org/2001/XMLSchema')
# 3 -  Use the "clear" method to empty the collection at once.
schemas.clear()
self.assertEqual(0, schemas.count)