I have been trying to solve this problem that is generated when I run command mvn install. I show you the console errors and my file pom. I hope You can help me please.

C:\workspace\workflows>mvn install
[INFO] Scanning for projects...

[INFO] ------------------------------------------------------------------------
[INFO] Building workflows
[INFO]    task-segment: [install]
[INFO] ------------------------------------------------------------------------
[INFO] [buildnumber:create {execution: default}]
[INFO] Storing buildNumber: 20111010-174335 at timestamp: 1318284815250
[INFO] [incremental-build:incremental-build {execution: default}]
[INFO] Verifying module descriptor ...
[INFO] Verifying parent modules...
[INFO] Verifying resources...
[INFO] Verifying sources...
[INFO] [nuxeo:eclipse-version {execution: eclipsize-version}]
[INFO] eclipseVersion:1.0.0.-SNAPSHOT
[INFO] [resources:resources {execution: default-resources}]
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 5 resources
[INFO] [compiler:compile {execution: default-compile}]
[INFO] Compiling 2 source files to C:\workspace\workflows\target\c
lasses
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] \workspace\workflows\src\main\java\ve\com\ema\Document
CreationListener.java:[5,31] package org.nuxeo.ecm.core.event does not exist

[ERROR] \workspace\workflows\src\main\java\ve\com\ema\Document
CreationListener.java:[6,31] package org.nuxeo.ecm.core.event does not exist

Pom file:

 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>org.nuxeo.ecm.platform</groupId>
    <artifactId>nuxeo-services-parent</artifactId>
    <version>5.4.1</version>
  </parent>

  <artifactId>nuxeo-platform-usermanager-core</artifactId>
  <name>Nuxeo User Manager - Core</name>
  <description>
    Nuxeo Enterprise Platform: User Manager - Core.
  </description>

  <dependencies>
    <dependency>
      <groupId>org.nuxeo.ecm.platform</groupId>
      <artifactId>nuxeo-platform-usermanager-api</artifactId>
    </dependency>
    <dependency>
      <groupId>org.nuxeo.ecm.core</groupId>
      <artifactId>nuxeo-core-api</artifactId>
    </dependency>

  </dependencies>

</project>

I have been doing this tutorial: link