public String getKey() {
        return this.key;
    }
<p>
The following are keys you can use:
</p>
<ul>
<li>
<p>
<b>description</b>: Prefix match, not case-sensitive.
</p>
</li>
<li>
<p>
<b>name</b>: Prefix match, case-sensitive.
</p>
</li>
<li>
<p>
<b>tag-key</b>: Prefix match, case-sensitive.
</p>
</li>
<li>
<p>
<b>tag-value</b>: Prefix match, case-sensitive.
</p>
</li>
<li>
<p>
<b>primary-region</b>: Prefix match, case-sensitive.
</p>
</li>
<li>
<p>
<b>owning-service</b>: Prefix match, case-sensitive.
</p>
</li>
<li>
<p>
<b>all</b>: Breaks the filter value string into words and then searches all attributes for matches. Not
case-sensitive.
</p>
</li>
</ul>

@return The following are keys you can use:</p>
        <ul>
        <li>
        <p>
        <b>description</b>: Prefix match, not case-sensitive.
        </p>
        </li>
        <li>
        <p>
        <b>name</b>: Prefix match, case-sensitive.
        </p>
        </li>
        <li>
        <p>
        <b>tag-key</b>: Prefix match, case-sensitive.
        </p>
        </li>
        <li>
        <p>
        <b>tag-value</b>: Prefix match, case-sensitive.
        </p>
        </li>
        <li>
        <p>
        <b>primary-region</b>: Prefix match, case-sensitive.
        </p>
        </li>
        <li>
        <p>
        <b>owning-service</b>: Prefix match, case-sensitive.
        </p>
        </li>
        <li>
        <p>
        <b>all</b>: Breaks the filter value string into words and then searches all attributes for matches. Not
        case-sensitive.
        </p>
        </li>
@see FilterNameStringType
aws-java-sdk-secretsmanager/src/main/java/com/amazonaws/services/secretsmanager/model/Filter.java