in src/zgoog_cl_data_cluster.clas.abap [0:0]
METHOD CONSTRUCT_KEY_TABLE.
DATA: lo_struc_def TYPE REF TO cl_abap_structdescr.
lo_struc_def ?= cl_abap_typedescr=>describe_by_name( iv_table ).
DATA: lt_key_components TYPE abap_component_tab,
lr_component TYPE REF TO abap_compdescr.
LOOP AT lo_struc_def->components REFERENCE INTO lr_component.
IF iv_incl_srtf2 IS INITIAL.
IF lr_component->name = 'SRTF2'.
EXIT.
ENDIF.
ENDIF.
DATA: ls_comp_descr TYPE abap_componentdescr.
ls_comp_descr-name = lr_component->name.
ls_comp_descr-type = lo_struc_def->get_component_type( lr_component->name ).
APPEND ls_comp_descr TO lt_key_components.
IF lr_component->name = 'SRTF2'.
EXIT.
ENDIF.
ENDLOOP.
DATA: lo_tab_descr TYPE REF TO cl_abap_tabledescr.
lo_tab_descr = cl_abap_tabledescr=>create( cl_abap_structdescr=>create( lt_key_components ) ).
CREATE DATA er_tabdescr TYPE HANDLE lo_tab_descr.