question: whether to support the plain text signature method . concode_field_sep boolean supportHMAC_SHA1 concode_elem_sep boolean supportPlainText concode_elem_sep PasswordEncoder plainTextPasswordEncoder concode_elem_sep boolean supportRSA_SHA1 concode_field_sep OAuthSignatureMethod getSignatureMethod concode_elem_sep void setSupportRSA_SHA1 concode_elem_sep boolean isSupportHMAC_SHA1 concode_elem_sep void setPlainTextPasswordEncoder concode_elem_sep void setSupportHMAC_SHA1 concode_elem_sep boolean isSupportRSA_SHA1 concode_elem_sep PasswordEncoder getPlainTextPasswordEncoder concode_elem_sep void setSupportPlainText
target: boolean function ( ) { return supportPlainText ; }