Add getStatementCompletion to the API spec

pkg/analysis_server/tool/spec/spec_input.html

Index: pkg/analysis_server/tool/spec/spec_input.html
diff --git a/pkg/analysis_server/tool/spec/spec_input.html b/pkg/analysis_server/tool/spec/spec_input.html
index e2a4c158ba843ebfcb417a9cc103687a464a1aa8..1598d7954320ada476ca63c002fa5659ebfbcfbb 100644
--- a/pkg/analysis_server/tool/spec/spec_input.html
+++ b/pkg/analysis_server/tool/spec/spec_input.html
@@ -1801,6 +1801,46 @@
           </field>
         </result>
       </request>
+      <request method="getStatementCompletion">
+        <p>
+          Get the changes required to convert the partial statement at the given
+          location into a syntactically valid statement. If the current statement
+          is already valid the change will insert a newline plus appropriate
+          indentation at the end of the line containing the offset.
+          If a change that makes the statement valid cannot be determined (perhaps
+          because it has not yet been implemented) the statement will be considered
+          already valid and the appropriate change returned.
+        </p>
+        <params>
+          <field name="file">
+            <ref>FilePath</ref>
+            <p>
+              The file containing the statement to be completed.
+            </p>
+          </field>
+          <field name="offset">
+            <ref>int</ref>
+            <p>
+              The offset used to identify the statement to be completed.
+            </p>
+          </field>
+        </params>
+        <result>
+          <field name="change">
+            <ref>SourceChange</ref>
+            <p>
+              The change to be applied in order to complete the statement.
+            </p>
+          </field>
+          <field name="whitespaceOnly">
+            <ref>int</ref>

[scheglov, 2017/03/29 01:18:34]

bool?

+            <p>
+              Will be true if the change contains nothing but whitespace
+              characters, or is empty.
+            </p>
+          </field>
+        </result>
+      </request>
       <request method="sortMembers">
         <p>
           Sort all of the directives, unit and class members