Spring Cloud Config Server - Multi-File Composition / Importing

Is your feature request related to a problem? Please describe.
I'm trying to group blocks of configuration into individual files for clarity. Unfortunately, I can't find any documentation on if Spring Cloud Config Server offers the ability to reference other Spring Cloud Config Server files from within a given file and have them imported / included in the final rendered file.

Describe the solution you'd like
Much in the same way that Spring Boot offers the spring.config.import option, I'd like to see a way to import or include populated Spring Cloud Config Server files part-a.properties & part-b.properties in template.properties. Maybe name it ${spring.cloud.config.import}

# part-a.properties
property.a=SOME_VALUE_A

# part-b.properties
property.b=SOME_VALUE_B

# template.properties

${spring.cloud.config.import=part-a.properties}

${spring.cloud.config.import=part-b.properties}

Spring Cloud Config Server rendered template.properties:

# template.properties

# part-a.properties
property.a=SOME_VALUE_A

# part-b.properties
property.b=SOME_VALUE_B

Describe alternatives you've considered
Specifying every single property that we want to include is cumbersome and lacks clarity.

The issue names no files, tests, or entry points. Start by reviewing how Spring Cloud Config Server renders a requested properties file and how Spring Boot's spring.config.import works; done should include a documented or tested way to compose part-a.properties and part-b.properties into template.properties.