ECondition (eBus 7.4.0 API)

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface ECondition
```
This interface allows ESubscribeFeed and EReplyFeed to automatically test a message in order to determine if it should be passed on to a client. If test returns true eBus forwards the message to the client. If test returns false or throws an exception, then the message is not forwarded.
In eBus v. 4.2.0, this interface is now marked as a @FunctionalInterface, allowing this interface to be defined using a Java lambda expression.

Author:

Charles Rapp

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`test(EMessage msg)`	Returns `true` if the message meets this condition and so should be passed to the eBus client; `false` if the message should not be passed on.

- Method Detail
  - test
```
boolean test(EMessage msg)
```
    Returns true if the message meets this condition and so should be passed to the eBus client; false if the message should not be passed on. If this method throws an exception, it is treated the same as having returned false.
    
    Parameters:
    
    msg - The tested notification message.
    
    Returns:
    
    true if the message meets this condition and so should be passed to the eBus client.