BEASTObject that performs calculations based on the State.
A Function representing a number of elements of another Function.
Logable: yes, this can be used in a log.
 
| type: beast.base.core.Function |
| Argument to extract element from. |
| Required input |
 
| type: java.lang.Integer |
| Index of first element to extract. |
| Required input |
 
| type: java.lang.Integer |
| Number of elements to extract. |
| Optional input. Default: 1 |