The AWS Account Number of the owner of the EC2 security group specified in the EC2SecurityGroupName parameter. The AWS Access Key ID
            is not an acceptable value. For VPC DB security groups, EC2SecurityGroupId must be provided. Otherwise, EC2SecurityGroupOwnerId and
            either EC2SecurityGroupName or EC2SecurityGroupId must be provided.
             
            
 Declaration Syntax
 Declaration Syntax| C# | 
public string EC2SecurityGroupOwnerId { get; set; }