code: private void addAliasDefinition(AliasDefinition aliasDef) {
          // Prerequisites:
          assert aliasDef != null;
          assert !m_aliasDefMap.containsKey(aliasDef.getName());
          assert aliasDef.getTableName().equals(this.getTableName());
          
          m_aliasDefMap.put(aliasDef.getName(), aliasDef);
      }
docs: Add the given alias definition to this table definition.