How to use the bitcore-lib.process function in bitcore-lib

var shutdownBitcore = function(callback) {
  if (bitcore.process) {
    bitcore.process.kill();
  }
  callback();
};

function(next) {
      bitcore.process = spawn(bitcore.exec, args, bitcore.opts);

      bitcore.process.stdout.on('data', function(data) {

        if (debug) {
          process.stdout.write(data.toString());
        }

      });
      bitcore.process.stderr.on('data', function(data) {

        if (debug) {
          process.stderr.write(data.toString());
        }

      });

      waitForBlocksGenerated(next);
    }
  ], callback);

function(next) {
      bitcore.process = spawn(bitcore.exec, args, bitcore.opts);

      bitcore.process.stdout.on('data', function(data) {

        if (debug) {
          process.stdout.write(data.toString());
        }

      });
      bitcore.process.stderr.on('data', function(data) {

        if (debug) {
          process.stderr.write(data.toString());
        }

      });

      waitForBlocksGenerated(next);
    }
  ], callback);

function(next) {
      bitcore.process = spawn(bitcore.exec, args, bitcore.opts);

      bitcore.process.stdout.on('data', function(data) {

        if (debug) {
          process.stdout.write(data.toString());
        }

      });
      bitcore.process.stderr.on('data', function(data) {

        if (debug) {
          process.stderr.write(data.toString());
        }

      });

      waitForBlocksGenerated(next);
    }

after(function(done) {
      pubSocket.close();
      rpcServer.close();
      bitcore.process.kill();
      setTimeout(done, 1000);
    });

function(next) {
      bitcore.process = spawn(bitcore.exec, args, bitcore.opts);

      bitcore.process.stdout.on('data', function(data) {

        if (debug) {
          process.stdout.write(data.toString());
        }

      });
      bitcore.process.stderr.on('data', function(data) {

        if (debug) {
          process.stderr.write(data.toString());
        }

      });

      waitForBlocksGenerated(next);
    }

var shutdownBitcore = function(callback) {
  if (bitcore.process) {
    bitcore.process.kill();
  }
  callback();
};

function(next) {
      bitcore.process = spawn(bitcore.exec, args, bitcore.opts);

      bitcore.process.stdout.on('data', function(data) {

        if (debug) {
          process.stdout.write(data.toString());
        }

      });
      bitcore.process.stderr.on('data', function(data) {

        if (debug) {
          process.stderr.write(data.toString());
        }

      });

var shutdownBitcore = function(callback) {
  if (bitcore.process) {
    bitcore.process.kill();
  }
  callback();
};