Gets and sets the property EnvironmentId. 
            
The ID of the environment to update.
                     If no environment with this ID exists, AWS Elastic Beanstalk         returns
            an          CopyC#         error.
CopyC#         error.      
            InvalidParameterValue
                     Condition: You must specify either this or an EnvironmentName, or both. 
                     If you do not specify either, AWS Elastic Beanstalk returns  CopyC#
            error.
CopyC#
            error.        
            MissingRequiredParameter
 Declaration Syntax
 Declaration Syntax| C# | 
public string EnvironmentId { get; set; }