public String getKey() {
        return this.key;
    }
<p>
One part of a key-value pair that makes up a tag. A <code>key</code> is a general label that acts like a category
for more specific tag values.
</p>

@return One part of a key-value pair that makes up a tag. A <code>key</code> is a general label that acts like a
        category for more specific tag values.
aws-java-sdk-devicefarm/src/main/java/com/amazonaws/services/devicefarm/model/Tag.java