Version (Pravega API)

```
public interface Version
```
Version of a Key in a Table.

Field Summary

Fields
Modifier and Type	Field	Description
`static Version`	`NO_VERSION`	`Version` that indicates no specific version is desired.
`static Version`	`NOT_EXISTS`	`Version` that indicates the `TableKey` must not exist.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`io.pravega.client.tables.impl.VersionImpl`	`asImpl()`	Returns the actual instance.
`static Version`	`fromString(java.lang.String str)`	Deserializes the `Version` from its serialized form obtained from calling `toString()`.
`java.lang.String`	`toString()`	Serializes the `Version` to a human readable string.

- Field Detail
  - NO_VERSION
```
static final Version NO_VERSION
```
    Version that indicates no specific version is desired. Using this will result in an unconditional update or removal being performed. See KeyValueTable for details on conditional/unconditional updates.
  - NOT_EXISTS
```
static final Version NOT_EXISTS
```
    Version that indicates the TableKey must not exist. Using this will result in an conditional update or removal being performed, conditioned on the TableKey not existing at the time of the operation. See KeyValueTable for details on conditional/unconditional updates.
- Method Detail
  - asImpl
```
io.pravega.client.tables.impl.VersionImpl asImpl()
```
    Returns the actual instance. This method prevents other classes from implementing this interface.
    
    Returns:
    
    Implementation of the Version interface.
  - toString
```
java.lang.String toString()
```
    Serializes the Version to a human readable string.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    A string representation of the Version.
  - fromString
```
static Version fromString(java.lang.String str)
```
    Deserializes the Version from its serialized form obtained from calling toString().
    
    Parameters:
    
    str - A serialized Version.
    
    Returns:
    
    The Version object.