Trait ConfigurationSourceChangeEvent 
Source pub trait ConfigurationSourceChangeEvent:
    Value
    + Send
    + Sync {
    // Required methods
    fn get_source(&self) -> &dyn ConfigurationSource;
    fn get_change_time(&self) -> u128;
    fn clone_boxed(&self) -> Box<dyn ConfigurationSourceChangeEvent>;
    fn to_boxed(self) -> Box<dyn ConfigurationSourceChangeEvent>;
}
Performs copy-assignment from 
source. 
Read more
Tests for self and other values to be equal, and is used by ==.
Tests for !=. The default implementation is almost always sufficient,
and should not be overridden without very good reason.