fixes javadoc

sdk-java/src/main/java/io/littlehorse/sdk/wfsdk/LHExpression.java

@@ -4,21 +4,80 @@
 
 public interface LHExpression extends Serializable {
 
+    /**
+     * Returns an expression whose value is the `other` added to this expression.
+     * @param other the value to be added to this expression.
+     * @return an expression whose value is the `other` added to this expression.
+     */
     LHExpression add(Serializable other);
 
+    /**
+     * Returns an expression whose value is the `other` subtracted from this expression.
+     * @param other the value to be subtracted from this expression.
+     * @return an expression whose value is the `other` subtracted from this expression.
+     */
     LHExpression subtract(Serializable other);
 
+    /**
+     * Returns an expression whose value is the `other` multiplied by this expression.
+     * @param other the value to be multiplied by this expression.
+     * @return an expression whose value is the `other` multiplied by this expression.
+     */
     LHExpression multiply(Serializable other);
 
+    /**
+     * Returns an expression whose value is this expression divided by the `other`.
+     * @param other the value to divide this expression by.
+     * @return an expression whose value is this expression divided by the `other`.
+     */
     LHExpression divide(Serializable other);
 
+    /**
+     * Returns an expression whose value is this expression extended by the `other`.
+     * @param other the value to extend this expression by.
+     * @return an expression whose value is this expression extended by the `other`.
+     */
     LHExpression extend(Serializable other);
 
+    /**
+     * Returns an expression whose value is this expression with all occurrences of
+     * `other` removed.
+     * @param other the value to remove from this expression.
+     * @return an expression whose value is this expression with all occurrences of
+     * `other` removed.
+     */
     LHExpression removeIfPresent(Serializable other);
 
+    /**
+     * Returns an expression whose value is this expression with the index specified
+     * by `other` removed.
+     * 
+     * Valid only for JSON_ARR expressions.
+     * @param index the index at which to insert the `other`.
+     * @return an expression whose value is this expression with the `other` inserted
+     * at the specified `index`.
+     */
     LHExpression removeIndex(int index);
 
+    /**
+     * Returns an expression whose value is this expression with the index specified
+     * by `index` removed.
+     * 
+     * Valid only for JSON_ARR expressions.
+     * @param index the index at which to remove the value.
+     * @return an expression whose value is this expression with the value at the
+     * specified `index` removed.
+     */
     LHExpression removeIndex(LHExpression index);
 
+    /**
+     * Returns an expression whose value is this expression with the key specified
+     * by `key` removed.
+     * 
+     * Valid only for JSON_OBJ expressions.
+     * @param key the key to remove from this expression.
+     * @return an expression whose value is this expression with the key specified
+     * by `key` removed.
+     */
     LHExpression removeKey(Serializable key);
 }

sdk-java/src/main/java/io/littlehorse/sdk/wfsdk/WorkflowThread.java

@@ -109,18 +109,53 @@ public interface WorkflowThread {
      */
     LHFormatString format(String format, WfRunVariable... args);
 
+    /**
+     * Creates a variable of type INT in the ThreadSpec.
+     * @param name is the name of the variable.
+     * @return a WfRunVariable.
+     */
     WfRunVariable declareInt(String name);
 
+    /**
+     * Creates a variable of type STR in the ThreadSpec.
+     * @param name is the name of the variable.
+     * @return a WfRunVariable.
+     */
     WfRunVariable declareStr(String name);
 
+    /**
+     * Creates a variable of type DOUBLE in the ThreadSpec.
+     * @param name is the name of the variable.
+     * @return a WfRunVariable.
+     */
     WfRunVariable declareDouble(String name);
 
+    /**
+     * Creates a variable of type BYTES in the ThreadSpec.
+     * @param name is the name of the variable.
+     * @return a WfRunVariable.
+     */
     WfRunVariable declareBytes(String name);
 
+    /**
+     * Creates a variable of type JSON_ARR in the ThreadSpec.
+     * @param name is the name of the variable.
+     * @return a WfRunVariable.
+     */
     WfRunVariable declareJsonArr(String name);
 
+    /**
+     * Creates a variable of type JSON_OBJ in the ThreadSpec.
+     * @param name is the name of the variable.
+     * @return a WfRunVariable.
+     */
     WfRunVariable declareJsonObj(String name);
 
+    /**
+     * Creates a variable of type BOOL in the ThreadSpec.
+     * @param name is the name of the variable.
+     * @return a WfRunVariable.
+     */
     WfRunVariable declareBool(String name);
 
     /**
@@ -504,7 +539,7 @@ SpawnedThreads spawnThreadForEach(
      * result is formed by removing all occurrences from RHS from the LHS. Valid only for LHS of type
      * JSON_ARR.
      * @param lhs is the left hand side of the expression.
-     * @param rhs is the right hand side of the expression, which is removed from the lhs.
+     * @param index is the right hand side of the expression, which is removed from the lhs.
      * @return an LHExpression representing the result of the removal.
      */
     LHExpression removeIndex(Serializable lhs, Serializable index);
@@ -513,7 +548,7 @@ SpawnedThreads spawnThreadForEach(
      * Returns an expression that can be passed into a variable assignment/mutation or a TaskRun. The
      * result is formed by removing the RHS key from the LHS. Valid only for LHS of type JSON_OBJ.
      * @param lhs is the left hand side of the expression.
-     * @param rhs is the right hand side of the expression, which is removed from the lhs.
+     * @param key is the right hand side of the expression, which is removed from the lhs.
      * @return an LHExpression representing the result of the removal.
      */
     LHExpression removeKey(Serializable lhs, Serializable key);