merge request approvals (#236)

src/main/java/org/gitlab/api/GitlabAPI.java

@@ -1077,6 +1077,16 @@ public class GitlabAPI {
         return retrieve().getAll(tailUrl, GitlabMergeRequest[].class);
     }
 
+    /**
+     * Get information about the approvals present and required for a merge request
+     * EE only.
+     */
+    public GitlabMergeRequestApprovals getMergeRequestApprovals(GitlabMergeRequest mr) throws IOException {
+        String tailUrl = GitlabProject.URL + "/" + sanitizeProjectId(mr.getTargetProjectId()) +
+            GitlabMergeRequest.URL + "/" + mr.getIid() + GitlabMergeRequestApprovals.URL;
+        return retrieve().to(tailUrl, GitlabMergeRequestApprovals.class);
+    }
+
     /**
      * Cherry picks a commit.
      * 

src/main/java/org/gitlab/api/models/GitlabApprovedBy.java

+package org.gitlab.api.models;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Incomprehensibly, Gitlab packages "approved_by" in a wrapper which contains a user
+ * and nothing else.
+ */
+public class GitlabApprovedBy {
+    private GitlabUser user;
+
+    public GitlabUser getUser() {
+        return user;
+    }
+
+    public void setUser(GitlabUser user) {
+        this.user = user;
+    }
+}

src/main/java/org/gitlab/api/models/GitlabMergeRequestApprovals.java

+package org.gitlab.api.models;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class GitlabMergeRequestApprovals {
+    public static final String URL = "/approvals";
+
+    private Integer id;
+    private Integer iid;
+    @JsonProperty("project_id")
+    private Integer projectId;
+    private String title;
+    private String description;
+    private String state;
+
+    @JsonProperty("updated_at")
+    private Date updatedAt;
+
+    @JsonProperty("created_at")
+    private Date createdAt;
+
+    @JsonProperty("merge_status")
+    private String mergeStatus;
+    
+    @JsonProperty("approvals_required")
+    private Integer approvalsRequired;
+
+    @JsonProperty("approvals_left")
+    private Integer approvalsLeft;
+
+    @JsonProperty("approved_by")
+    private List<GitlabApprovedBy> approvedBy;
+
+    @JsonProperty("suggested_approvers")
+    private List<GitlabUser> suggestedApprovers;
+
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public Integer getIid() {
+        return iid;
+    }
+
+    public void setIid(Integer iid) {
+        this.iid = iid;
+    }
+
+    public Integer getProjectId() {
+        return projectId;
+    }
+
+    public void setProjectId(Integer projectId) {
+        this.projectId = projectId;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String d) {
+        description = d;
+    }
+
+    public String getState() {
+        return state;
+    }
+
+    public void setState(String state) {
+        this.state = state;
+    }
+
+    public Date getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(Date updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    public Date getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(Date createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public String getMergeStatus() {
+        return mergeStatus;
+    }
+
+    public void setMergeStatus(String mergeStatus) {
+        this.mergeStatus = mergeStatus;
+    }
+
+    public Integer getApprovalsRequired() {
+        return approvalsRequired;
+    }
+
+    public void setApprovalsRequired(Integer approvalsRequired) {
+        this.approvalsRequired = approvalsRequired;
+    }
+    
+    public Integer getApprovalsLeft() {
+        return approvalsLeft;
+    }
+
+    public void setApprovalsLeft(Integer approvalsLeft) {
+        this.approvalsLeft = approvalsLeft;
+    }
+
+    public List<GitlabApprovedBy> getApprovedBy() {
+        return approvedBy;
+    }
+
+    public void setApprovedBy(List<GitlabApprovedBy> approvedBy) {
+        this.approvedBy = approvedBy;
+    }
+    
+    public List<GitlabUser> getSuggestedApprovers() {
+        return suggestedApprovers;
+    }
+
+    public void setSuggestedApprovers(List<GitlabUser> suggestedApprovers) {
+        this.suggestedApprovers = suggestedApprovers;
+    }
+}

src/main/java/org/gitlab/api/models/GitlabUser.java

@@ -22,7 +22,7 @@ public class GitlabUser {
     private String _twitter;
     private String _provider;
     private String _state;
-    private boolean _blocked;
+    private Boolean _blocked;
     private List<GitlabUserIdentity> _identities;
 
     @JsonProperty("private_token")