See: Description
| Class | Description | 
|---|---|
| Objects | Provides static methods that operate on objects. | 
| Preconditions | Reduces the code necessary to check preconditions on method state and
 parameters. | 
| Strings | Provides frequently used static null-safe String testing methods . | 
| SystemUtils | Provides convenience behavior to determine the operating system
 and Java version. | 
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