ArgumentCount (Flink : 2.0-SNAPSHOT API)

All Known Implementing Classes:

ConstantArgumentCount
```
@PublicEvolving
public interface ArgumentCount
```
Defines the count of accepted arguments (including open intervals) that a function can take.
Note: Implementations should implement Object.hashCode() and Object.equals(Object).

See Also:

ConstantArgumentCount

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Optional<Integer>`	`getMaxCount()`	Returns the maximum number of argument (inclusive) that a function can take.
`Optional<Integer>`	`getMinCount()`	Returns the minimum number of argument (inclusive) that a function can take.
`boolean`	`isValidCount(int count)`	Enables custom validation of argument counts after `getMinCount()` and `getMaxCount()` have been validated.

- Method Detail
  - isValidCount
```
boolean isValidCount(int count)
```
    Enables custom validation of argument counts after getMinCount() and getMaxCount() have been validated.
    
    Parameters:
    
    count - total number of arguments including each argument for a vararg function call
  - getMinCount
```
Optional<Integer> getMinCount()
```
    Returns the minimum number of argument (inclusive) that a function can take.
    Optional.empty() if such a lower bound is not defined.
  - getMaxCount
```
Optional<Integer> getMaxCount()
```
    Returns the maximum number of argument (inclusive) that a function can take.
    Optional.empty() if such an upper bound is not defined.