public String getKey() {
        return this.key;
    }
<p>
The key of a tag assigned to the resource. Use this filter to find all resources assigned a tag with a specific
key, regardless of the tag value.
</p>

@return The key of a tag assigned to the resource. Use this filter to find all resources assigned a tag with a
        specific key, regardless of the tag value.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/RequestIpamResourceTag.java