import com.sun.xml.internal.ws.api.pipe.ClientPipeAssemblerContext; //导入依赖的package包/类
@NotNull
public Pipe createClient(ClientPipeAssemblerContext context) {
    Pipe head = context.createTransportPipe();
    head = context.createSecurityPipe(head);

    if (dump) {
        // for debugging inject a dump pipe. this is left in the production code,
        // as it would be very handy for a trouble-shooting at the production site.
        head = context.createDumpPipe("client", System.out, head);
    }
    head = context.createWsaPipe(head);
    head = context.createClientMUPipe(head);
    return context.createHandlerPipe(head);
}
 

import com.sun.xml.internal.ws.api.pipe.ClientPipeAssemblerContext; //导入依赖的package包/类
/**
 * Called during the pipeline construction process once to allow a container
 * to register a pipe for security.
 *
 * This pipe will be injected to a point very close to the transport, allowing
 * it to do some security operations.
 *
 * @param ctxt
 *      Represents abstraction of SEI, WSDL abstraction etc. Context can be used
 *      whether add a new pipe to the head or not.
 *
 * @param tail
 *      Head of the partially constructed pipeline. If the implementation
 *      wishes to add new pipes, it should do so by extending
 *      {@link com.sun.xml.internal.ws.api.pipe.helper.AbstractFilterPipeImpl} and making sure that this {@link com.sun.xml.internal.ws.api.pipe.Pipe}
 *      eventually processes messages.
 *
 * @return
 *      The default implementation just returns <tt>tail</tt>, which means
 *      no additional pipe is inserted. If the implementation adds
 *      new pipes, return the new head pipe.
 */
public @NotNull Pipe createSecurityPipe(ClientPipeAssemblerContext ctxt, @NotNull Pipe tail) {
    return tail;
}
 

import com.sun.xml.internal.ws.api.pipe.ClientPipeAssemblerContext; //导入依赖的package包/类
/**
 * Called during the pipeline construction process once to allow a container
 * to register a pipe for security.
 *
 * This pipe will be injected to a point very close to the transport, allowing
 * it to do some security operations.
 *
 * @param ctxt
 *      Represents abstraction of SEI, WSDL abstraction etc. Context can be used
 *      whether add a new pipe to the head or not.
 *
 * @param tail
 *      Head of the partially constructed pipeline. If the implementation
 *      wishes to add new pipes, it should do so by extending
 *      {@link com.sun.xml.internal.ws.api.pipe.helper.AbstractFilterPipeImpl} and making sure that this {@link com.sun.xml.internal.ws.api.pipe.Pipe}
 *      eventually processes messages.
 *
 * @return
 *      The default implementation just returns {@code tail}, which means
 *      no additional pipe is inserted. If the implementation adds
 *      new pipes, return the new head pipe.
 */
public @NotNull Pipe createSecurityPipe(ClientPipeAssemblerContext ctxt, @NotNull Pipe tail) {
    return tail;
}