public String getKey() {
        return this.key;
    }
<p>
The key of the tag. Tag keys are case sensitive. Each Amazon Keyspaces resource can only have up to one tag with
the same key. If you try to add an existing tag (same key), the existing tag value will be updated to the new
value.
</p>

@return The key of the tag. Tag keys are case sensitive. Each Amazon Keyspaces resource can only have up to one
        tag with the same key. If you try to add an existing tag (same key), the existing tag value will be
        updated to the new value.
aws-java-sdk-keyspaces/src/main/java/com/amazonaws/services/keyspaces/model/Tag.java