title: Spring Boot: how to use multiple yml files
body: <p>In Spring Boot, I know that I can replace application.properties with application.yml and use the YAML format.
  However, my application.yml is getting crowded so I need to split it up a bit. How can I do that? I would like to do something like this:</p>
  
  <pre><code>...
  @Configuration
  @EnableAutoConfiguration
  @EnableWebMvc
  @EnableScheduling
  @PropertySource({"classpath:application.yml", "classpath:scheduling.yml"})
  public class ApplicationConfig {
  ...
  </code></pre>