public String getExpression() {
        return this.expression;
    }
<p>
A regular expression pattern. If present, only those tables whose names match the pattern are returned.
</p>

@return A regular expression pattern. If present, only those tables whose names match the pattern are returned.
aws-java-sdk-glue/src/main/java/com/amazonaws/services/glue/model/GetTablesRequest.java