} // -- String getModelId()

    /**
     * Set the path/URL of the POM or {@code null} if unknown.
     *
     * @param location
     */
    public void setLocation(String location) {
        this.location = location;
    } // -- void setLocation( String )

    /**
     * Set the identifier of the POM in the format {@code
     * <groupId>:<artifactId>:<version>}.
     *
     * @param modelId
     */

        problems.add(new ModelProblemCollectorRequest(Severity.ERROR, ModelProblem.Version.BASE)
                .setMessage("Failed to interpolate file location " + path + ": " + e.getMessage())
                .setLocation(Optional.ofNullable(target.getLocation(locationKey))
                        .map(InputLocation::new)
                        .orElse(null))
                .setException(e));
    }

            }
        }
        result.setLocations(locations);

        return result;
    } // -- InputLocation merge( InputLocation, InputLocation, java.util.Collection )

    /**
     *
     *
     * @param locations
     */
    public void setLocations(java.util.Map<Object, InputLocation> locations) {
        this.locations = locations;
    } // -- void setLocations( java.util.Map )

            problems.add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                    .setMessage("The property name is required to activate the profile " + profile.getId())
                    .setLocation(property.getLocation("")));
            return false;
        }

        String sysValue = context.getUserProperties().get(name);
        if (sysValue == null) {
            sysValue = context.getSystemProperties().get(name);

                            .setMessage("Failed to determine activation for profile " + profile.getId() + ": "
                                    + e.getMessage())
                            .setLocation(profile.getLocation(""))
                            .setException(e));
                    return false;
                }
            }
        }
        return isActive;
    }

            problems.add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                    .setMessage("Failed to determine Java version for profile " + profile.getId())
                    .setLocation(activation.getLocation("jdk")));
            return false;
        }
        try {
            return isJavaVersionCompatible(jdk, version);
        } catch (NumberFormatException e) {

     * <code>null</code> if unknown.
     */
    public InputLocation getLocation(Object field);
    /**
     * Sets the location of the specified field.
     *
     * @param field The key of the field, must not be
     * <code>null</code>.
     * @param location The location of the field, may be
     * <code>null</code>.
     */
    public void setLocation(Object field, InputLocation location);

                    .setMessage("Failed to interpolate file location " + path + " for profile " + profile.getId() + ": "
                            + e.getMessage())
                    .setLocation(file.getLocation(missing ? "missing" : "exists"))
                    .setException(e));
            return false;
        }

        if (path == null) {
            return false;
        }

    }

    public ModelProblemCollectorRequest setMessage(String message) {
        this.message = message;
        return this;
    }

    public InputLocation getLocation() {
        return location;
    }

    public ModelProblemCollectorRequest setLocation(InputLocation location) {
        this.location = location;
        return this;
    }

        problems.add(new ModelProblemCollectorRequest(severity, version)
                .setMessage(buffer.toString())
                .setLocation(getLocation(fieldName, tracker)));
    }

    private static org.apache.maven.model.InputLocation getLocation(String fieldName, InputLocationTracker tracker) {
        InputLocation location = null;

        if (tracker != null) {