public SchemaId getSchemaId() {
        return this.schemaId;
    }
<p>
This is a wrapper structure to contain schema identity fields. The structure contains:
</p>
<ul>
<li>
<p>
SchemaId$SchemaArn: The Amazon Resource Name (ARN) of the schema. One of <code>SchemaArn</code> or
<code>SchemaName</code> has to be provided.
</p>
</li>
<li>
<p>
SchemaId$SchemaName: The name of the schema. One of <code>SchemaArn</code> or <code>SchemaName</code> has to be
provided.
</p>
</li>
</ul>

@return This is a wrapper structure to contain schema identity fields. The structure contains:</p>
        <ul>
        <li>
        <p>
        SchemaId$SchemaArn: The Amazon Resource Name (ARN) of the schema. One of <code>SchemaArn</code> or
        <code>SchemaName</code> has to be provided.
        </p>
        </li>
        <li>
        <p>
        SchemaId$SchemaName: The name of the schema. One of <code>SchemaArn</code> or <code>SchemaName</code> has
        to be provided.
        </p>
        </li>
aws-java-sdk-glue/src/main/java/com/amazonaws/services/glue/model/GetSchemaVersionsDiffRequest.java