ConfigSourceProvider (Eclipse MicroProfile 3.0)

```
public interface ConfigSourceProvider
```
Implement this interfaces to provide multiple ConfigSources. This is e.g. needed if there are multiple property files of a given name on the classpath but they are not all known at compile time.
If a single ConfigSource exists, then there is no need to register it using a custom implementation of ConfigSourceProvider, it can be registered directly as a ConfigSource.
A ConfigSourceProvider will get picked up via the ServiceLoader mechanism and can be registered by providing a META-INF/services/org.eclipse.microprofile.config.spi.ConfigSourceProvider file which contains the fully qualified classname of the custom ConfigSourceProvider.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.Iterable<ConfigSource>`	`getConfigSources(java.lang.ClassLoader forClassLoader)`	Return the collection of `ConfigSource`s.

- Method Detail
  - getConfigSources
```
java.lang.Iterable<ConfigSource> getConfigSources(java.lang.ClassLoader forClassLoader)
```
    Return the collection of ConfigSources. For each e.g. property file, we return a single ConfigSource or an empty list if no ConfigSource exists.
    
    Parameters:
    
    forClassLoader - the classloader which should be used if any is needed
    
    Returns:
    
    the ConfigSources to register within the Config.