Gets and sets the property S3KeyPrefix. 
            
The prefix applied to the log file names.
Constraints:
- Cannot exceed 512 characters
- Cannot
            contain spaces( ), double quotes ("), single quotes ('),                a backslash
            (\), or control characters. The hexadecimal codes for                invalid characters
            are:                - x00 to x20
- x22
- x27
- x5c
- x7f or larger
 
 Declaration Syntax
 Declaration Syntax| C# | 
public string S3KeyPrefix { get; set; }