axutil_string_create_const() has a strange signature

axutil_string_create_const() has a strange signature:

/**

• Creates a string struct.
• @param str pointer to string. string struct would not create a duplicate
• of this and assumes the str would have longer life than that of itself
• @param env pointer to environment struct
• @return a pointer to newly created string struct
  */
  AXIS2_EXTERN axutil_string_t *AXIS2_CALL
  axutil_string_create_const(
  const axutil_env_t * env,
  axis2_char_t ** str);

Why "** str" and not "* str" ?

I expected to be able to do:
axutil_string_t *soap_action = axutil_string_create_const(env, "MySoapAction");

Instead I have to do:
const axis2_char_t * MySoapAction = "MySoapAction"
axutil_string_t *soap_action = axutil_string_create_const(env, &MySoapAction);

This is crazy !

Same problem for axutil_string_create_assume_ownership().