public Tag withKey(String key) {
        setKey(key);
        return this;
    }
<p>
Specifies the name assigned to the tag that you create.
</p>

@param key
       Specifies the name assigned to the tag that you create.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-b2bi/src/main/java/com/amazonaws/services/b2bi/model/Tag.java