Spring Framework: How and where use the "name" of the @PropertySource?

Question

In Spring Framework, for the @PropertySource, according with its API or javadoc it has the name attribute

Indicate the name of this property source. 
If omitted, the factory() will generate a name based on the underlying resource 
(in the case of DefaultPropertySourceFactory: 
derived from the resource description through a 
corresponding name-less ResourcePropertySource constructor).

Ok, is clear that is possible define the name such as:

@PropertySource(name="infra", 
                value={"classpath:/com/.../infrastructure.properties"})

But How and where use that name? What is its purpose?