Gets and sets the property NewClusterIdentifier. 
            
The new identifier for the cluster.
Constraints:
- Must contain from 1 to 63 alphanumeric characters or hyphens.
- Alphabetic characters must be lowercase.
- First character must be a letter.
- Cannot end with a hyphen or contain two consecutive hyphens.
- Must be unique for all clusters within an AWS account.
            Example:  CopyC#
CopyC#examplecluster
 Declaration Syntax
 Declaration Syntax| C# | 
public string NewClusterIdentifier { get; set; }