[BUG] Cannot extract specific library template for Rust generator

[AntoineSebert]

🐛 Bug Report:

Describe the bug

The Rust generator supports 4 library templates:

• reqwest (default)
• reqwest-trait
• hyper
• hyper0x

Source: https://github.com/OpenAPITools/openapi-generator/blob/master/docs/generators/rust.md#config-options

However, the command openapi-generator-cli author template does not seem to recognise any of the above names:

openapi-generator-cli author template -g rust --library reqwest
[main] WARN  o.o.codegen.cmd.AuthorTemplate - The library 'out/libraries/reqwest' was not extracted. Please verify the spelling and retry.
[main] INFO  o.o.codegen.cmd.AuthorTemplate - Extracted templates to 'out' directory. Refer to https://openapi-generator.tech/docs/templating for customization details.

Instead, the templates for all libraries are generated, as if openapi-generator-cli author template -g rust had been ran.

Steps to Reproduce

Steps to reproduce the behavior:

1. Run openapi-generator-cli author template -g rust --library reqwest
2. See error

Expected behavior

Only the specified library templates should be generated.

Operation System (please complete the following information):

• OS: Ubuntu
• Version 24.04.2
• kernel: 6.8.0-64-generic

Package System (please complete the following information):

• Version 7.14.0