title: How can I add multiple header files recursively in .modulemap?
body: <p>for example, this .modulemap works:</p>
  
  <pre><code>framework module MySDK {
    umbrella header "MySDK-umbrella.h"
    header "inc/header1.h"
    header "inc/header2.h"
    header "inc/header3.h"
    ...
  
    export *
    module * { export * }
  }
  </code></pre>
  
  <p>but this one does not:</p>
  
  <pre><code>framework module MySDK {
    umbrella header "MySDK-umbrella.h"
    header "inc/*.h"
  
    export *
    module * { export * }
  }
  </code></pre>
  
  <p>So how can I add multiple header files recursively in .modulemap?</p>