Issue(s)

https://oktainc.atlassian.net/browse/OKTA-939653

Description

This PR fixes the 400 Bad Request (E0000019) error encountered when invoking ApplicationSsoApi.previewSAMLmetadataForApplication(...).

Problem:
The endpoint /api/v1/apps/{appId}/sso/saml/metadata responds with text/xml, but the SDK was sending Accept: application/json.

This mismatch caused the API to return:

"errorSummary": "Bad request. Accept and/or Content-Type headers likely do not match supported values."

Fix:

• Updated the SDK logic (in either the mustache template or ApiClient.java) to dynamically set the Accept header to text/xml for this endpoint.
• Ensured the method’s return type remains String to safely handle raw XML without deserialization errors.
• Avoided parsing or deserializing text/xml responses through Jackson.

Category

• Bugfix
• Enhancement
• New Feature
• Library Upgrade
• Configuration Change
• Versioning Change
• Unit or Integration Test(s)
• Documentation

Signoff

• I have submitted a CLA for this PR
• Each commit message explains what the commit does
• I have updated documentation to explain what my PR does
• My code is covered by tests if required
• I did not edit any automatically generated files