code: @Override
  	public SqlEntityQuery<E> offset(final long offset) {
  		if (!agent().getSqlConfig().getDialect().supportsLimitClause()) {
  			throw new UroborosqlRuntimeException("Unsupported offset clause.");
  		}
  		this.offset = offset;
  		return this;
  	}
docs: {@inheritDoc}
  
  @see jp.co.future.uroborosql.fluent.SqlEntityQuery#offset(long)