public TableKeysAndAttributes addPrimaryKey(PrimaryKey primaryKey) {
        if (primaryKey != null) {
            if (primaryKeys == null)
                primaryKeys = new ArrayList<PrimaryKey>();
            checkConsistency(primaryKey);
            this.primaryKeys.add(primaryKey);
        }
        return this;
    }
public TableKeysAndAttributes addPrimaryKey ( PrimaryKey primaryKey ) { if ( primaryKey != null ) { if ( primaryKeys == null ) primaryKeys = new ArrayList < PrimaryKey > ( ) ; checkConsistency ( primaryKey ) ; this . primaryKeys . add ( primaryKey ) ; } return this ; }
Adds a primary key to be included in the batch get-item operation. A
primary key could consist of either a hash-key or both a
hash-key and a range-key depending on the schema of the table.