IndexProperties (OptaPlanner constraints: Constraint streams (Bavet) 8.23.0.Final API)

```
public interface IndexProperties
```
Index properties are cached in tuples and each tuple carries its unique instance.
Index properties are shallow immutable and implement Object.equals(Object) and Object.hashCode().

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default <Type_> Type_`	`getIndexerKey(int fromInclusive, int toExclusive)`
`<Type_> Type_`	`getProperty(int index)`	Retrieves index property at a given position.
`int`	`maxLength()`

- Method Detail
  - getProperty
```
<Type_> Type_ getProperty(int index)
```
    Retrieves index property at a given position.
    
    Type Parameters:
    
    Type_ - ComparisonIndexer will expect this to implement Comparable.
    
    Parameters:
    
    index -
    
    Returns:
    
    never null
  - maxLength
```
int maxLength()
```
  - getIndexerKey
```
default <Type_> Type_ getIndexerKey(int fromInclusive,
                                    int toExclusive)
```
    Type Parameters:
    
    Type_ - any type understanding that two keys may point to different tuples unless their instances are equal
    
    Parameters:
    
    fromInclusive - position of the first index property to be part of the key, inclusive
    
    toExclusive - position of the last index property to be part of the key, exclusive
    
    Returns:
    
    never null;