title: Spring boot application.properties extends another property file
body: <p>I have few properties in one property file which I want to inherit to application properties. Please let know if that is possible in spring boot.</p>
  
  <p>something like</p>
  
  <pre><code>application.properties
  ----------------------
  extends = otherproperty.properties
  property1 = value1
  property2= value2
  property3 = value3
  
  otherproperty.properties
  ------------------------
  property4=value4
  property5 = value5
  </code></pre>
  
  <p>When the spring boot app loads, I want all 5 properties should be loaded and available using @Value annotation. The spring boot automatically picks the application.properties in classpath and I don't have applicaitoncontext xml or any property loader code.</p>
  
  <p>Thanks in advance.</p>