public void setSchemaDefinition(SchemaUnion schemaDefinition) {
        this.schemaDefinition = schemaDefinition;
    }
<p>
Definition for a schema on a tabular Dataset.
</p>

@param schemaDefinition
       Definition for a schema on a tabular Dataset.
aws-java-sdk-finspacedata/src/main/java/com/amazonaws/services/finspacedata/model/UpdateDatasetRequest.java