Provide support to change jdoc of "simpleContent" attributes

[ahmad2702]

Lets say, we have the following xsd snippet:

<xsd:complexType name="File">
		<xsd:annotation>
			<xsd:documentation>
				My jdoc for the File class
			</xsd:documentation>
		</xsd:annotation>

		<xsd:simpleContent>
            <xsd:annotation>
                <xsd:documentation>
                    My jdoc for my "value" attribute
                </xsd:documentation>
			</xsd:annotation>
            
			<xsd:extension base="xsd:base64Binary">
				<xsd:attribute name="id" type="xsd:string">
					<xsd:annotation>
						<xsd:documentation>
							The ID of this file
						</xsd:documentation>
					</xsd:annotation>
				</xsd:attribute>
			</xsd:extension>
		</xsd:simpleContent>
</xsd:complexType>

And from this xsd file we can generate our proto file using schema2proto-maven-plugin:

// My jdoc for the File class
message File {
  // The ID of this file
  string id = 1;
  // SimpleContent value of element
  bytes value = 2;
}

Problem: We get the wrong jdoc for the "simpleContent" attribute. I have found that this jdoc was hard coded into no.entur.schema2proto.generateproto.SchemaParser. Please provide support to change the jdoc of "simpleContent" attributes.

[seime]

Most likely fixed, ancient XSOM package hides this value well