public String getValue() {
        return this.value;
    }
<p>
A value to filter by.
</p>
<p>
With the date/time keys (<code>*At{Before,After}</code>), the value is a valid <a
href="https://datatracker.ietf.org/doc/html/rfc3339.html">RFC 3339</a> string with no UTC offset and with an
optional fractional precision (for example, <code>1985-04-12T23:20:50.52Z</code>).
</p>

@return A value to filter by.</p>
        <p>
        With the date/time keys (<code>*At{Before,After}</code>), the value is a valid <a
        href="https://datatracker.ietf.org/doc/html/rfc3339.html">RFC 3339</a> string with no UTC offset and with
        an optional fractional precision (for example, <code>1985-04-12T23:20:50.52Z</code>).
aws-java-sdk-proton/src/main/java/com/amazonaws/services/proton/model/ListServiceInstancesFilter.java